Heat exchanger
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This document discusses different types of heat exchangers. It describes shell and tube heat exchangers which consist of tubes that transfer heat between two fluids, one flowing inside the tubes and one outside. It also describes plate heat exchangers which use thin plates with large surface areas to transfer heat between fluids. Additionally, it mentions adiabatic wheel heat exchangers which use an intermediate solid or fluid to store heat and transfer it between two fluids, as well as plate fin and pillow plate heat exchangers.
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The primary purpose of a heat exchanger is to either cool down or heat up a fluid, depending on the specific application.
Two fluids, a hot fluid and a cold fluid, flow through the heat exchanger in separate channels.
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The primary purpose of a heat exchanger is to either cool down or heat up a fluid, depending on the specific application.
Two fluids, a hot fluid and a cold fluid, flow through the heat exchanger in separate channels.
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Parts :
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Tube sheet: The tube sheet is a flat plate that holds the tubes in place within the shell.
Baffles: Baffles are used to direct the flow of fluid through the tubes and to increase the heat transfer surface area.
Nozzles: Nozzles are the openings that allow the fluids to enter and exit the heat exchanger.
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Heat exchanger
- 1. TTyyppeess ooff HHeeaatt EExxcchhaannggeerrss Presented By:- Ajay Asodariya (130043119003) Department of Mechanical Engineering
- 2. Introduction • A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall, so that they never mix, or they may be in direct contact. • They are widely used in petroleum refineries, chemical plants, petrochemical plants, natural gas processing, refrigeration, power plants, air conditioning and space heating.
- 3. Types of Heat Exchangers. •Shell and Tube Heat Exchanger. •Plate Heat Exchanger. •Adiabatic Wheel Heat Exchanger. •Plate Fin Heat Exchanger. •Pillow Plate Heat Exchanger.
- 4. Shell and Tube Heat Exchanger. • Shell and tube heat exchangers consist of a series of tubes. • One set of these tubes contains the fluid that must be either heated or cooled. The second fluid runs over the tubes that are being heated or cooled so that it can either provide the heat or absorb the heat required.
- 5. Plate Heat Exchanger. • Plate Heat Exchanger is composed of multiple, thin, slightly-separated plates that have very large surface areas and fluid flow passages for heat transfer. • This stacked-plate arrangement can be more effective, in a given space, than the shell and tube heat exchanger.
- 6. Adiabatic Wheel Heat Exchanger. • Adiabatic Wheel heat exchanger uses an intermediate fluid or solid store to hold heat, which is then moved to the other side of the heat exchanger to be released.
- 7. Plate Fin Heat Exchanger. • Plate Fin heat exchanger uses "sandwiched" passages containing fins to increase the affectivity of the unit. • The designs include cross flow and counter flow coupled with various fin configurations such as straight fins, offset fins and wavy fins.
- 8. Pillow Plate Heat Exchanger. • A pillow plate exchanger is commonly used in the dairy industry for cooling milk in large direct-expansion stainless steel bulk tanks. • The pillow plate allows for cooling across nearly the entire surface area of the tank, without gaps that would occur between pipes welded to the exterior of the tank.